From da062558db08e8374fa0880bf93f16896da0720e Mon Sep 17 00:00:00 2001
From: Victor Stinner <victor.stinner@gmail.com>
Date: Sat, 16 Nov 2013 00:13:29 +0100
Subject: [PATCH] Fix compiler warning (on Windows 64-bit): explicit cast
 Py_ssize_t to unsigned char, n is in range [0; 255] (a tuple cannot have a
 negative length)

---
 Python/marshal.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Python/marshal.c b/Python/marshal.c
index e211a0f0182..dc5411c1ff7 100644
--- a/Python/marshal.c
+++ b/Python/marshal.c
@@ -80,7 +80,7 @@ typedef struct {
 
 #define w_byte(c, p) if (((p)->fp)) putc((c), (p)->fp); \
                       else if ((p)->ptr != (p)->end) *(p)->ptr++ = (c); \
-                           else w_more(c, p)
+                           else w_more((c), p)
 
 static void
 w_more(char c, WFILE *p)
@@ -448,7 +448,7 @@ w_complex_object(PyObject *v, char flag, WFILE *p)
         n = PyTuple_Size(v);
         if (p->version >= 4 && n < 256) {
             W_TYPE(TYPE_SMALL_TUPLE, p);
-            w_byte(n, p);
+            w_byte((unsigned char)n, p);
         }
         else {
             W_TYPE(TYPE_TUPLE, p);